Multi-barrel media mill and methods of grinding

Details Multi-barrel media mill and methods of grinding Multi-barrel media mill and methods of grinding

B - Operations, Transporting

02

C

B02C 17/16 (2006.01)

Patent

CA 2345691

A multiple barrel chamber for a media mill where the media mill is used to grind and disperse pigments for paint, coating, ink products, and other pigment-vehicle fluids, as well as grinding and dispersing other particulate matter. More particularly, a three barrel grinding chamber (20) including a lengthwise rotatable shaft (30, 32, 34) in each barrel portion is disclosed. Each shaft includes a disc array overlapping an adjacent disc array. Utilization of variable speed bi-directional motors, preferably independently controlled, to rotate each shaft allows impact, tack-shear, and slurry grinding to be accomplished with one media mill. The grinding efficiencies achieved far exceed those of conventional media mills. Media mill grinding discs are also disclosed.

La présente invention concerne un broyeur à fûts multiples destiné à broyer et à disperser des pigments de peintures, de revêtements, de produits d'encre et autres fluides vecteurs de pigments ainsi que diverses matières particulaires. Cette invention concerne plus particulièrement une chambre de broyage à trois fûts (20) comprenant chacun un arbre longitudinal (30, 32, 34). Chaque arbre porte un ensemble de disques dont les disques viennent s'encastrer dans ceux de l'ensemble de disques adjacent. L'emploi de moteurs bidirectionnels à régime variable, de préférence à commande indépendante, pour l'entraînement des arbres, permet avec un seul et même broyeur d'effectuer des opérations de broyage à percussion, par cisaillement ou avec pâte fluide. L'efficacité du broyage est bien supérieure à celle de broyeurs classiques. L'invention concerne également des disques de broyage.

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